<!-- Navigation -->
<div class="mdl-layout__drawer">
    <span class="mdl-layout-title">lzw-723's blog</span>
    <nav class="mdl-navigation">
        <a class="mdl-navigation__link" href="{{ site.baseurl }}/">主页</a>
        {% for page in site.pages %}{% if page.title %}
        <a class="mdl-navigation__link" href="{{ page.url | prepend: site.baseurl }}">{{ page.title }}</a>
        {% endif %}{% endfor %}
    </nav>
</div>